Evans; Alexander de Lahunta 7 August
The circular muscles also contract intermittently, which has the effect of stimulating ejaculation of sperm, followed by prostatic fluid, as well as maintaining the swelling of the penis and therefore the tie, for some time.
For domestic dogs the tie may last up to half an hour or more, though usually less.
Categories : Dog anatomy Dog Bulbourethral gland or Bulb of. Not to be confused with breeding Mammal penis.